Water heater



Dec. 9, 1930. E. L. BADGER 1,734,652

WATER HEATER Original Filed Sept. 15, 1926 nwnloz Z Edwin L. Badger@ltomaa Patented Dec. 9, 1930 UNITED, STATES PATENT OFFICE EDWIN L.BADGER, or sroxANE, WASHINGTON, ASSIGNOB r DOHERTY RnsEARon coxPANY, onNEW YORK, N. Y., A CORPORATION or DELAWARE WATER HEATER Applicationfiled September 15, 1928, Serial No. 185,558. Renewed May 81, 1928.

My present invention relates to improvements 1n water heaters of thetype employing liquid or gaseous heaters, and utilized in connectionwith the well known stand boiler for domestic purposes.

The invention involves the use of an upright casing or stand pipe inwhich is contained the heating elements in the form of a flue and meansare provided in the flue for causing a return draft of the heatinggases.

As thus constructed, the heating element is provided with a maximumheating surface and the water casing or hot water tank asso-' ciatedtherewith is arranged to distribute '15 the water over the heatingsurface in a comparatively thin jacket in order that a large quantity ofwater may be heated in a minimum period of time.

The invention consists in certain novel combinations and arrangements ofarts for accomplishing the above results an objects, as will hereinafterbe more fully pointed out and claimed.

In the accompanying drawings I have illustrated one com lete example ofthe physical embodiment o my invention wherein the parts are. combinedand arranged according to one mode I have thus far devised for thepractical application of the principles of my invention.

Figure 1 is a view showin in elevation the well known t pe of standlmileryand in vertical section t e water heater connected therewith andinvolving the improvements of my invention.-

Figure 2 is a transverse sectional view-at line 22 of Figure 1.

a Figure sis a transverse sectional view at line 3-3 of Figure 1.

In order that the utility and eneralarrangement and relation of parts 0the inven-' tion may readily be understood I have indicated inFigure 1 astand boiler 1 having the cold water inlet pipe 2 leading into the topthereof as usual; a cold water faucet 3 and pipe-connection 4 at thebottom of the stand boiler and the usual cou ling nut 5. At the top ofthe stand boiler the hot water pipe 6 is (provided with asimilarcoupling nut 7, 60 an connection is made to the water-heatercasing 8 by the cold water pipe 9 from coupling 5 and the hot water pipe10 to the coupling 7, to provide for the required circulation of waterthrough the heater and stand boiler.

The hot water casing or tank 8 is preferably of cylindrical constructionwith a comparatively small diameter with relation to its height, whichas shown is greater than the height of the stand boiler, and the tank,shown as provided with a closed top is closed at its bottom by means ofa screw cap 11. Within the tank is located the cylindrical flue 12concentric with the walls of the tank and forming within the latter anannular, hot water space, or water jacket in contact with the walls ofthe flue. The space is comparatively narrow in order that the water, asa thin film or jacket, may receive or absorb heat throughout anextensive area, from the enclosed fiue, thus insuring a large quantityof hot water in a short time, and increasing the efiectiveness of thecirculation of water the hot water tank and the stand To secure the fluewithin the tank the former is fashioned with an exterior flange 1 13 atits lower end and the screw cap 11 is utilized to fasten and retain theflue in position by'en agement with this flange. The interior of t eflue is divided by a vertically extending, central artition 14 extendingfrom the bottom 0 the flue and terminatin a short distance below the topclosed end 0 the flue. In this manner an updraft passage and adown-draft passage are provided for the hot gases, and pairs of bafileplates 15 are fashioned rigid or integral with the partition fordirecting the gases into close contact with the inner surface of thewalls of the fine to increase the heating effect. These baflie walls asbest seen in Figure 2 are semi-circular in shape in order to providenarrow openings between their edges and the adjacent wall of the flue,and

as the hot gases pass through these restrictions they are causedtoimpinge against the wall of the flue. To more directly cause thiscontact of the hot gases with the flue walls, the baflle plates areinclined slightly as shown in-Figure 1 for the purpose of de-- controlvalve 17, and the burner 18 at, the.

end of the pipe is located in the bottom por- Eion of the up-draftpassage of the return- The lower end of the heater is provided with acircular head 19, and the out et opening 20 from the flue o ens .into anelbow or bent pipe 21 which 15 connected to the upright pipe 22 thatleads to a suitable flue 23. The burner is introduced through an openingin the lower head 19, and the latter is removable to permit access tothe interior of the heater for removal of the inner flue 12, after thescrew cap 11 has been removed. By the removal of these arts the interiorwalls of the flue, its partition and bafiie plates, are readilyaccessible for cleaning or scraping to remove therefrom accumulations ofsoot etc. deposited by'the hot gases through the flue.

As thus constructed it will be apparent that an extensive heating areais provided for the flue, the walls of the flue are intense- 1v heatedby the deflected gases as they pass therethrough and the thin jacket ofwater in the annular space surrounding the flue is quickly andthoroughly heated to insure a rapid circulation and make available a1loar e supply of hot water through the stand Having thus fullydescribed my invention, what I claim as new and desire to secure byLetters Patent is 1. A water heater comprising a tank having inlet andoutlet connections, an interior flue forming an annular water space, avertical partition within said flue and bafile plates thereon, anexterior flange on the flue and a screw cap on the tank for said flange,a removable head at the lower end of the tank and flue having an outletand an outlet to said chamber, and a burner mounted in one of said fluepassages.

3. A water heater comprisin a tubular casin mounted vertically an havina closed top, another tubular casing of srna ler.

len h and diameter mounted concentrically wit in the larger casing andhaving a closed top and a flange on its lower end arranged to form aclosure for the lower end of said larger casing, a vertical partition insaid' smaller casing dividing it into a return flue .having connectingupdraft and downdraft passages terminating at the base of the pipeconnected thereto for gases, and a burner located in an opening in saidhead and enclosed within the lower end of the flue.

2. A water heater comprising two tubular casings of unequal length anddiameter each closed at one end, the smaller being mount edconcentrically within the larger and hav- 7 ing its open end joined tothe open endof the larger by an annular closure for the otherwise openend of the chamber thus formed between the two casings, a partitiondividing the smaller casing longitudinally into two parallel fluepassages of equal length connected by an opening formed between theclosed end of said casing and said partition, water inlet and outletconnections

